Finding the Fourth Proportional to 7,164.69, 9,887.24 and 4,020.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,164.69 : 9,887.24 = 4,020.89 : x
2. Step 2: Convert to fraction form
   7,164.69/9,887.24 = 4,020.89/x
3. Step 3: Cross multiply
   7,164.69x = 9,887.24 × 4,020.89
4. Step 4: Simplify right side
   7,164.69x = 39,755,434.90
5. Step 5: Solve for x
   x = 39,755,434.90/7,164.69
6. Step 6: Final answer
   x = 5,548.80